/usr/share/doc/libkxl0-dev/changelog.Debian.gz is in libkxl0-dev 1.1.7-16ubuntu1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/libkxl0-dev/../libkxl0/changelog.Debian.gz
/usr/share/doc/libkxl0-dev/../libkxl0/changelog.Debian.gz